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01: /* Copyright (C) 1996,1997,1998,1999,2000,2011 Free Software Foundation, Inc.
02:    This file is part of the GNU C Library.
03: 
04:    The GNU C Library is free software; you can redistribute it and/or
05:    modify it under the terms of the GNU Lesser General Public
06:    License as published by the Free Software Foundation; either
07:    version 2.1 of the License, or (at your option) any later version.
08: 
09:    The GNU C Library is distributed in the hope that it will be useful,
10:    but WITHOUT ANY WARRANTY; without even the implied warranty of
11:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12:    Lesser General Public License for more details.
13: 
14:    You should have received a copy of the GNU Lesser General Public
15:    License along with the GNU C Library; if not, write to the Free
16:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17:    02111-1307 USA.  */
18: 
19: #ifndef _MCHECK_H
20: #define _MCHECK_H       1
21: 
22: #include <features.h>
23: 
24: __BEGIN_DECLS
25: 
26: /* Return values for `mprobe': these are the kinds of inconsistencies that
27:    `mcheck' enables detection of.  */
28: enum mcheck_status
29:   {
30:     MCHECK_DISABLED = -1,       /* Consistency checking is not turned on.  */
31:     MCHECK_OK,                  /* Block is fine.  */
32:     MCHECK_FREE,                /* Block freed twice.  */
33:     MCHECK_HEAD,                /* Memory before the block was clobbered.  */
34:     MCHECK_TAIL                 /* Memory after the block was clobbered.  */
35:   };
36: 
37: 
38: /* Activate a standard collection of debugging hooks.  This must be called
39:    before `malloc' is ever called.  ABORTFUNC is called with an error code
40:    (see enum above) when an inconsistency is detected.  If ABORTFUNC is
41:    null, the standard function prints on stderr and then calls `abort'.  */
42: extern int mcheck (void (*__abortfunc) (enum mcheck_status)) __THROW;
43: 
44: /* Similar to `mcheck' but performs checks for all block whenever one of
45:    the memory handling functions is called.  This can be very slow.  */
46: extern int mcheck_pedantic (void (*__abortfunc) (enum mcheck_status)) __THROW;
47: 
48: /* Force check of all blocks now.  */
49: extern void mcheck_check_all (void);
50: 
51: /* Check for aberrations in a particular malloc'd block.  You must have
52:    called `mcheck' already.  These are the same checks that `mcheck' does
53:    when you free or reallocate a block.  */
54: extern enum mcheck_status mprobe (void *__ptr) __THROW;
55: 
56: /* Activate a standard collection of tracing hooks.  */
57: extern void mtrace (void) __THROW;
58: extern void muntrace (void) __THROW;
59: 
60: __END_DECLS
61: 
62: #endif /* mcheck.h */
63: 

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